4000 Router Series Layer 3 - IP Services Command Reference

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Predefined user roles

network-admin

Parameters

ipv6-address: Specifies the IPv6 address of a DNS server.

interface-type interface-number: Specifies the output interface by its type and number. If you do not

specify any interface, the device forwards DNS packets out of the output interface of the matching route.

You must specify the output interface when the IPv6 address of the DNS server is a link-local address.

vpn-instance vpn-instance-name: Specifies the name of an MPLS L3VPN instance, a case-sensitive string

of 1 to 31 characters. To specify a DNS server IPv6 address on the public network, do not use this option.

Usage guidelines

For dynamic DNS, the device sends DNS query request to the IPv6 DNS servers in the order their IPv6

addresses are specified.

You can specify DNS server IPv6 addresses for the public network and up to 1024 VPNs, and specify a

maximum of six DNS server IPv6 addresses for the public network or each VPN.

Examples

# Specify the DNS server IPv6 address as 2002::1 for the public network.

<Sysname> system-view

[Sysname] ipv6 dns server 2002::1

Related commands

display ipv6 dns server

ipv6 dns spoofing

Use ipv6 dns spoofing to enable DNS spoofing and specify the translated IPv6 address.

Use undo ipv6 dns spoofing to disable DNS spoofing.

Syntax

ipv6 dns spoofing ipv6-address [ vpn-instance vpn-instance-name ]

undo ipv6 dns spoofing ipv6-address [ vpn-instance vpn-instance-name ]

Default

DNS spoofing is disabled.

Views

System view

Predefined user roles

network-admin

Parameters

ipv6-address: Specifies the IPv6 address used to spoof name query requests.

vpn-instance vpn-instance-name: Specifies the name of an MPLS L3VPN instance, a case-sensitive string

of 1 to 31 characters. To enable DNS spoofing function on the public network, do not use this option.